The standard design tools for buildings and civil engineering infrastructure are not prepared for working with real world subsurface information that originate from the 3D geological and geotechnical models. Also GIS standards (as the OGC standard CityGML) or BIM standards (as IFC) are not ready for that. That is why it recently attains attention to study how 3D subsurface data can be processed in architectural design software (BIM) and in GIS/CAD by combining single standards. However, to offer required information in the best possible way for the users of both, above ground and subsurface applications, extensions to existing standards are required.